SSourcePicture pic; pic.iPicWidth = width; pic.iPicHeight = height; pic.iColorFormat = videoFormatI420; pic.pData[0] = y_plane; pic.pData[1] = u_plane; pic.pData[2] = v_plane; SFrameBSInfo info; encoder->EncodeFrame(&pic, &info);

Set iUsageType = SCREEN_CONTENT_REAL_TIME for low-motion UI overlays (health bars, maps). Use constant bitrate to avoid network spikes. 5. Common Pitfalls & Fixes | Problem | Solution | |---------|----------| | High CPU usage | Reduce resolution or use iRCMode = RC_QUALITY_MODE | | Color shift | Ensure correct RGB↔YUV matrix (BT.709 for HDTV) | | Dropped frames | Increase iMaxNalSz and use EncodeParameterSets() before first frame | | Audio sync | Store PTS (presentation timestamps) separately — H.264 stream has no audio | 6. Legal & Licensing Note OpenH264 is BSD 2-Clause — free for commercial use. However, it uses patents from MPEG LA, but Cisco provides a patent license when using the binary form from their official distribution.

SEncParamExt param; encoder->GetDefaultParams(¶m); param.iUsageType = CAMERA_VIDEO_REAL_TIME; // Low latency param.iPicWidth = 1280; param.iPicHeight = 720; param.fMaxFrameRate = 30.0f; param.iTargetBitrate = 2000000; // 2 Mbps param.iRCMode = RC_BITRATE_MODE;